Ventilatory characteristics in mechanically ventilated patients during manual hyperventilation for chest physiotherapy
| Autor: | R. C. N. Clarke, J. P. H. Fee, P. N. Convery, B. E. Kelly |
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| Rok vydání: | 1999 |
| Předmět: |
Artificial ventilation
Mechanical ventilation Lung business.industry medicine.medical_treatment Chest physiotherapy Respiratory physiology respiratory system Lung injury respiratory tract diseases Anesthesiology and Pain Medicine medicine.anatomical_structure Anesthesia Hyperventilation medicine medicine.symptom business Tidal volume circulatory and respiratory physiology |
| Zdroj: | Anaesthesia. 54:936-940 |
| ISSN: | 0003-2409 |
| Popis: | We measured the tidal volumes and peak inflation pressures generated during manual hyperventilation for chest physiotherapy in 25 adult ventilated patients. The average tidal volume ranged from 711 to 1511 ml, with a mean (SD) of 1120 (274) ml. There was a negative correlation (p < 0.05) between the average tidal volume and the lung injury, as measured by the Murray lung injury score. The average peak inflation pressure ranged from 37 to 74 cmH2O with a mean (SD) of 51.5 (7.6) cmH2O. There was a positive correlation (p < 0.05) between average peak inflation pressure and the lung injury score. Mean (SD) PaO2 improved by 18.3 (14.3) kPa from baseline after physiotherapy (p < 0.05). Mean (SD) PaCO2 decreased by 0.1 (0.4) kPa. As the lung score increases higher inflation pressures and smaller tidal volumes are used suggesting an increased potential for barotrauma or volutrauma in susceptible lungs. |
| Databáze: | OpenAIRE |
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